Doodybutch wrote:

I am think of having one of these Air/Oil Separators installed on my R182
(Lycoming O-540) at annual this summer.

I have a couple of questions:

1) Do they actually work and keep the oily mess off the bottom of the plane?
2) I think there are at least two different ones available - which is the
best?
3) Are there any problems with them?

My PA 24 250 arrived with a Walker (now Airwolf, I believe) air/oil sep
installed. It's designed to handle both the breather and a wet vacuum
pump, but since I have a dry pump at the moment (to be remedied when the
thing starts to act up) one fitting is plugged off. It works VERY well;
if I have any complaint it's that it's on the largish side and whoever
installed selected a firewall location designed to maximize annoyance
when changing the oil filter.